AirHint found the following cheapest return flights from London (LCY) to Toronto (YTZ) in March 2026 (see full year).

Return flights

17 Mar - 22 Mar	SWISS
09 Mar - 15 Mar	SWISS
13 Mar - 20 Mar	SWISS
03 Mar - 12 Mar	Aer Lingus
05 Mar - 09 Mar	SWISS
02 Mar - 08 Mar	Aer Lingus
12 Mar - 27 Mar	Aer Lingus
31 Mar - 08 Apr	Aer Lingus
15 Mar - 22 Mar	Aer Lingus
05 Mar - 12 Mar	SWISS
26 Mar - 29 Mar	Aer Lingus
22 Mar - 12 Apr	SWISS
26 Mar - 09 Apr	Aer Lingus
26 Mar - 03 Apr	Aer Lingus
28 Mar - 10 Apr	SWISS
26 Mar - 04 Apr	KLM
27 Mar - 10 Apr	SWISS
24 Mar - 08 Apr	Aer Lingus

Also check the deals for one-way flights from London to Toronto in March.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from London to Toronto in March from $819

Return flights